The Buffaloes (3-0) advance to Sunday night's championship game. They also earned a measure of payback for last March, when the Bears (3-1) knocked them out in the NCAA tournament's third round.

It wasn't easy for Colorado, though, which went 4 of 18 from the foul line. Andre Roberson missed two free throws with 3.1 seconds left that gave Baylor one final chance.

But Isaiah Austin's catch-and-shoot attempt was off the right rim as the buzzer sounded.

"This team's got toughness, it's got heart and I can't say enough about their resolve," Buffs head coach Tad Boyle said during his post-game interview on KKZN radio. "We overcame a lot today. Obviously the poor free-throw shooting, which doesn't take a rocket scientist to figure out. We also overcame 17 turnovers, which is way too many. But you have to find different ways to win.

"To beat a team that is as talented as Baylor and nationally ranked, that is why you come to these tournaments. I was really proud of our guys. For having some young guys, this team is dialed in. They are into it mentally and it is kind of exciting when you think about. But we can't get ahead of ourselves. It is one game."

It is the Buffs first regular season win over a ranked non-conference opponent since 1973.

"We haven't won any championships but it is a great win to have in our bank as we move forward," Boyle said. "We have to make sure we keep taking care of business, which is the challenge when you have some success early."

Baylor star Pierre Jackson had just 12 points after scoring 31 in an opening-round win here against Boston College.

Cory Jefferson led the Bears with 17 points on 7-of-8 shooting. Austin finished with eight points and 12 rebounds.

Spencer Dinwiddie added 11 for Colorado, while Roberson had seven points and 13 rebounds, his second straight tournament game with double-digit boards.

Roberson and the Buffaloes had to be strong on the glass with so many missed free throws. Roberson missed a one-and-one try with 1:01 to go and Colorado ahead 59-56.

Jackson's bucket with 19.8 seconds left drew Baylor within a point.

Dinwiddie next went to the line for Colorado and he, too, missed in a one-and-one situation. But Shane Harris-Tunks came up the rebound for the Buffaloes, and Booker was fouled.

He made only one attempt and Baylor was on the run, but A.J. Walton was short on his driving shot and Roberson collected the rebound, got fouled and set up the final moments.

Baylor had hoped to duplicate what it accomplished against Colorado in March in an 80-63 victory. But those Bears were loaded with tall, strong, talented players like Quincy Acy, Quincy Miller and Perry Jones III to get going down low. Brady Heslip helped outside with nine 3-pointers in that one.

This time, Heslip was off the mark, making just one of his six 3-point tries.

The Buffs will play Murray State in the championship game of the Charleston Classic on Sunday at 6:30 pm (MST) with television coverage on ESPN2.